Alert archive / Idaho / Tornado Warnings in 2020

Tornado Warning 3, NWS Pocatello, ID

April 30, 2020Franklin County, Oneida County, Idaho

NWS Pocatello, ID issued this tornado warning at Apr 30, 2020, 2:55 PM MDT for Franklin County, Oneida County, Idaho. It was in force for 50 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 30, 2020, 2:55 PM MDT (20:55 UTC)
Expired: Apr 30, 2020, 3:45 PM MDT
In force: 50 min
Issued by: NWS Pocatello, ID
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.0 in

Counties Franklin County, ID, Oneida County, ID

The radar

The Salt Lake City radar (KMTX), 92 km from the middle of the area, began a volume at 20:55 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Apr 30, 3:40 PM MDT	FUNNEL CLOUD	Samaria, ID
Apr 30, 3:50 PM MDT	HAIL 0.5	Samaria, ID	DIME SIZED HAIL 1 TO 2 INCHES DEEP ACCUMULATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 8.9 hours before the alert went out and 157 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 15 J/kg
Mixed-layer CIN: -349 J/kg
Mixed-layer LCL: 3017 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

714 
WFUS55 KPIH 302055
TORPIH
IDC041-071-302145-
/O.NEW.KPIH.TO.W.0003.200430T2055Z-200430T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Pocatello ID
255 PM MDT Thu Apr 30 2020

The National Weather Service in Pocatello has issued a

* Tornado Warning for...
  Southern Oneida County in southeastern Idaho...
  Southwestern Franklin County in southeastern Idaho...

* Until 345 PM MDT.
    
* At 255 PM MDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles northeast of Juniper, or 10 miles northwest of
  Snowville, moving east at 45 mph.

  HAZARD...Tornado and hail up to two inches in diameter.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Holbrook Summit around 315 PM MDT.
  Cherry Creek Rest Area around 340 PM MDT.

Other locations impacted by this tornadic thunderstorm include
Holbrook, Stone and Samaria.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4200 11298 4222 11295 4220 11206 4200 11209
TIME...MOT...LOC 2055Z 277DEG 39KT 4209 11286 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

Messick

2 follow-up statements

772 
WWUS55 KPIH 302119
SVSPIH

Severe Weather Statement
National Weather Service Pocatello ID
319 PM MDT Thu Apr 30 2020

IDC041-071-302145-
/O.CON.KPIH.TO.W.0003.000000T0000Z-200430T2145Z/
Oneida ID-Franklin ID-
319 PM MDT Thu Apr 30 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM MDT FOR SOUTHERN
ONEIDA AND SOUTHWESTERN FRANKLIN COUNTIES...
    
At 318 PM MDT, a severe thunderstorm capable of producing a tornado
was located 10 miles southeast of Holbrook Summit, or 11 miles
northeast of Snowville, moving east at 45 mph.

HAZARD...Tornado and ping pong ball size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Cherry Creek Rest Area around 340 PM MDT.

Other locations impacted by this tornadic thunderstorm include
Holbrook, Stone and Samaria.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4200 11298 4222 11295 4220 11206 4200 11209
TIME...MOT...LOC 2118Z 277DEG 39KT 4205 11252 

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

Messick

461 
WWUS55 KPIH 302145
SVSPIH

Severe Weather Statement
National Weather Service Pocatello ID
345 PM MDT Thu Apr 30 2020

IDC041-071-302155-
/O.EXP.KPIH.TO.W.0003.000000T0000Z-200430T2145Z/
Oneida ID-Franklin ID-
345 PM MDT Thu Apr 30 2020

...THE TORNADO WARNING FOR SOUTHERN ONEIDA AND SOUTHWESTERN FRANKLIN
COUNTIES HAS EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been allowed to expire.  However gusty
winds are still possible with this thunderstorm.

Remember, a Severe Thunderstorm Warning still remains in effect for
Oneida County

LAT...LON 4200 11298 4222 11295 4220 11206 4200 11209
TIME...MOT...LOC 2145Z 277DEG 39KT 4203 11226 

$$

Messick

The office that day

Everything else NWS Pocatello, ID issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 11:58 AM MDT	Special Weather Statement	PIH	Bannock, Bonneville, Oneida	92 min
Apr 30, 11:59 AM MDT	Special Weather Statement	PIH	Bannock, Bonneville, Oneida	91 min
Apr 30, 12:23 PM MDT	Special Weather Statement	PIH	Custer	97 min
Apr 30, 1:22 PM MDT	Severe Thunderstorm Warning	PIH	Cassia	53 min
Apr 30, 1:32 PM MDT	Special Weather Statement	PIH	Butte	88 min
Apr 30, 1:46 PM MDT	Tornado Warning	PIH	Cassia	44 min
Apr 30, 1:50 PM MDT	Special Weather Statement	PIH	Fremont	85 min
Apr 30, 2:27 PM MDT	Tornado Warning	PIH	Cassia, Oneida, Power	48 min
Apr 30, 3:37 PM MDT	Special Weather Statement	PIH	Lincoln	53 min
Apr 30, 3:44 PM MDT	Severe Thunderstorm Warning	PIH	Franklin, Oneida	46 min
Apr 30, 3:57 PM MDT	Severe Thunderstorm Warning	PIH	Lincoln	48 min
Apr 30, 4:09 PM MDT	Tornado Warning	PIH	Lincoln	20 min
Apr 30, 4:29 PM MDT	Special Weather Statement	PIH	Franklin	91 min
Apr 30, 4:29 PM MDT	Severe Thunderstorm Warning	PIH	Blaine, Lincoln	46 min
Apr 30, 4:39 PM MDT	Severe Thunderstorm Warning	PIH	Blaine, Lincoln, Minidoka, Power	51 min
Apr 30, 4:47 PM MDT	Severe Thunderstorm Warning	PIH	Clark	28 min
Apr 30, 5:01 PM MDT	Special Weather Statement	PIH	Butte	44 min
Apr 30, 5:16 PM MDT	Special Weather Statement	PIH	Clark	44 min
Apr 30, 5:17 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Blaine, Power	43 min
Apr 30, 5:17 PM MDT	Severe Thunderstorm Warning	PIH	Blaine, Cassia, Minidoka, Power	43 min
Apr 30, 5:46 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Butte, Clark, Custer, Jefferson	44 min
Apr 30, 5:55 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Bonneville	50 min
Apr 30, 5:59 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Blaine, Cassia, Power	46 min

Nearby

Tornado Warnings in Idaho, 2020 Every tornado warning in 2020 Tornadoes in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.